Ex situ bioremediation

Definition

Ex situ bioremediation involves the removal of contaminated soil or water from its original location to be treated elsewhere using biological agents like microorganisms. This technique is often used when site conditions do not favor in situ treatments.

5 Must Know Facts For Your Next Test

1. Ex situ bioremediation typically involves techniques such as biopiles, windrows, and land farming.
2. Biodegradation rates can be controlled more effectively in ex situ processes compared to in situ methods.
3. Nutrients and oxygen are often added to enhance microbial activity during ex situ bioremediation.
4. Ex situ methods can be more costly due to excavation and transportation of contaminated material.
5. Microorganisms used in ex situ bioremediation can degrade a wide range of contaminants, including hydrocarbons and heavy metals.

Review Questions

• What are the main techniques used in ex situ bioremediation?
• How does ex situ bioremediation differ from in situ bioremediation?
• What are some advantages and disadvantages of ex situ bioremediation?

Related terms

Biopiles: A treatment process where contaminated soils are piled up and aerated to promote microbial degradation.

In Situ Bioremediation: A method where the treatment of contamination occurs directly at the site without removing the affected material.

Land Farming: A technique where contaminated soil is spread over a large area and periodically tilled to enhance microbial breakdown of pollutants.